fix: replace bare except with except BaseException in check-docker.py

[harshadkhetpal]

Summary

Replace bare except: clauses with except BaseException: in scripts/check-docker.py.

Bare except: catches all exceptions including SystemExit, KeyboardInterrupt, and GeneratorExit, which is almost never intentional. Since both affected blocks immediately re-raise a new RuntimeError, except BaseException: is the correct replacement to preserve interrupt-handling semantics while making intent explicit.

Changes (2 occurrences):

# Before
except:
    raise RuntimeError("Failed to query Snapd package information")

# After
except BaseException:
    raise RuntimeError("Failed to query Snapd package information")

Testing

No behavior change for normal exception paths — style/correctness fix only. This prevents accidentally suppressing KeyboardInterrupt / SystemExit in non-reraise scenarios.

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[HyeockJinKim]

Thanks for the fix! However, bare except: already behaves identically to except
BaseException: — both catch everything including KeyboardInterrupt and
SystemExit. So this change doesn't affect Ctrl+C behavior.

To actually prevent suppressing keyboard interrupts, except Exception: is the
right choice here, since Exception excludes KeyboardInterrupt, SystemExit, and
GeneratorExit.

# Suggested
except Exception:
    raise RuntimeError("Failed to query Snapd package information")

# Or even better, since r.raise_for_status() only raises
# aiohttp.ClientResponseError:

except aiohttp.ClientResponseError:
    raise RuntimeError("Failed to query Snapd package information")